3:193
رَّبَّنَآ إِنَّنَا سَمِعْنَا مُنَادِيًۭا يُنَادِى لِلْإِيمَٰنِ أَنْ ءَامِنُوا۟ بِرَبِّكُمْ فَـَٔامَنَّا ۚ رَبَّنَا فَٱغْفِرْ لَنَا ذُنُوبَنَا وَكَفِّرْ عَنَّا سَيِّـَٔاتِنَا وَتَوَفَّنَا مَعَ ٱلْأَبْرَارِ
Our Lord, indeed we have heard a caller calling to faith, [saying], 'Believe in your Lord,' and we have believed. Our Lord, so forgive us our sins and remove from us our misdeeds and cause us to die with the righteous.
Translation · Saheeh International
Tafsir
Ibn Kathīr (abridged)
The Proofs of Tawhid for People of Understanding, their Characteristics, Speech, and Supplications
Allah said,
إِنَّ فِى خَلْقِ السَّمَـوَتِ وَالاٌّرْضِ
(Verily, in the creation of the heavens and the Earth,) 3:190, referring to the sky in its height and spaciousness, the earth in its expanse and density, the tremendous features they have of rotating planets, seas, mountains, deserts, trees, plants, fruits, animals, metals and various beneficial colors, scents, tastes and elements.
وَاخْتِلَـفِ اللَّيْلِ وَالنَّهَارِ
(And in the alternation of night and day), as one follows and takes from the length of the other. For instance, at times one of them becomes longer than the other, shorter than the other at times and equal to the other at other times, and the same is repeated again and again, and all this occurs by the decision of the Almighty, Most Wise. This is why Allah said,